hi, i'm chris matthews, welcome to the show. with us today, the "washington post" david ignatius and kathleen parker. helene cooper and michael crowley. first up, what does barack obama know what we don't know pledging to use american power against iran and getting more deeply involved in syria? the american mood when it comes to using force feels like 1915, the end of vietnam. after that war, reluctance to commit power abroad was called vietnam syndrome. then came desert storm in 1991 and the first george bush told us that the lightning victory there had banished vietnam wearyness. >> it's a proud day for america and by god, we have kicked the vietnam syndrome once and for all. chris: after the second george bush launched two long wars, many feel war wearyness like against vietnam. against the wearyness, how should we take this week's statements from this president on veryia and iran? >> we are clear that the use of chemical weapons against the syrian people would be a serious and tragic mistake and i will repeat, all options a